<?php
/*
* datetime.php:
* Functions to do things with dates and times.
*
* Copyright (c) 2006 UK Citizens Online Democracy. All rights reserved.
* Email: francis@mysociety.org; WWW: http://www.mysociety.org/
*
* $Id: datetime.php,v 1.7 2007/04/30 10:05:17 matthew Exp $
*
*/
// Parse a human entered date, which can be in one of many languages, into a
// computer date.
// $date - text string user enters for a date
// $now - current time
// $language - hint as to language $date is in, e.g. eo, nl
// $country - country site is for, e.g. US
// Returns associative array of information about the date.
// Stolen from Matthew's railway script.
function datetime_parse_local_date($date, $now, $language, $country) {
$error = 0;
$date = preg_replace('#((\b([a-z]|on|an|of|in|the|year of our lord))|(?<=\d)(st|nd|rd|th))\b#','',$date);
$date = str_replace(',', ' ', $date);
if (!$date)
return null;
$date = mb_strtolower($date, 'utf-8');
if ($language == 'eo')
$date = preg_replace('#((\b(de|la))|(?<=\d)-?a)\b#','',$date);
if ($language == 'nl')
$date = preg_replace('#(?<=\d)e\b#','',$date);
if ($language == 'zh') {
$date = preg_replace("#\xe5\xb9\xb4|\xe6\x9c\x88#", '/', $date);
$date = preg_replace("#\xe6\x97\xa5#", '', $date);
}
$date = preg_replace('#^(\d+)\.(\d+)\.(\d+)$#', '$1/$2/$3', $date);
# Remove dots, mainly for German format "23. Mai 2006"
$date = str_replace('.', '', $date);
# Translate foreign words to English as strtotime() is English only
$translate = array(
# Spanish,Italian,Portuguese,Welsh,Russian,Esperanto,Ukranian,Dutch,German,French
'Sunday' => array('domingo', 'domenica', 'dydd sul',
'воскресенье', 'неділя', 'dimaĉo', 'zondag', 'dimanche',
),
'Monday' => array('lunes', 'lunedi', 'segunda-feira', 'dydd llun',
'понедельник', 'lundo', 'понеділок', 'maandag', 'montag', 'lundi',
),
'Tuesday' => array('martes', 'martedì', 'terca-feira', 'вторник',
'вівторок', 'mardo', 'dinsdag', 'dydd mawrth', 'dienstag', 'mardi',
),
'Wednesday' => array('miércoles', 'mercoledì', 'quarta-feira',
'dydd mercher', 'среда', 'середа', 'merkredo', 'woensdag',
'mittwoch', 'mercredi',
),
'Thursday' => array('jueves', 'giovedì', 'quinta-feira',
'dydd iau', 'четверг', 'четвер', 'ĵaŭdo', 'donderdag',
'donnerstag', 'jeudi',
),
'Friday' => array('viernes', 'venerdì', 'sexta-feira',
'dydd gwener', 'пятница', "п'ятниця", 'vendredo', 'vrijdag',
'freitag', 'vendredi',
),
'Saturday' => array('sábado', 'sabato', 'dydd sadwrn', 'суббота',
'субота', 'sabato', 'zaterdag', 'samstag', 'satertag',
'sonnabend', 'samedi',
),
'January' => array('enero', 'gennaio', 'janeiro', 'ionawr',
'января', 'січень', 'januaro', 'januari', 'januar', 'jänner',
'janvier',
),
'February' => array('febrero', 'febbraio', 'fevereiro',
'chwefror', 'февраля', 'лютий', 'februaro', 'februari',
'februar', 'feber', 'février',
),
'March' => array('marzo', 'março', 'mawrth', 'марта',
'березень', 'marto', 'maart', 'märz', 'mars',
),
'April' => array('abril', 'aprile', 'ebrill', 'апреля',
'квітень', 'aprilo', 'april', 'avril',
),
'May' => array('mayo', 'maggio', 'maio', 'mai', 'мая', 'травень',
'majo', 'mei', 'mai',
),
'June' => array('junio', 'giugno', 'junho', 'mehefin', 'июня',
'червень', 'juni', 'juni', 'juin',
),
'July' => array('julio', 'luglio', 'julho', 'gorffennaf',
'июля', 'липень', 'juli', 'juli', 'juillet',
),
'August' => array('agosto', 'awst', 'августа', 'серпень',
'aŭgusto', 'augustus', 'august', 'août',
),
'September' => array('septiembre', 'settembre', 'setembro',
'medi', 'сентября', 'вересень', 'septembro', 'september',
'septembre',
),
'October' => array('octubre', 'ottobre', 'outubro', 'hydref',
'октября', 'жовтень', 'oktobro', 'oktober', 'oktober',
'octobre',
),
'November' => array('noviembre', 'novembre', 'novembro',
'tachwedd', 'ноября', 'листопад', 'novembro', 'november',
'novembre',
),
'December' => array('diciembre', 'dicembre', 'dezembro',
'rhagfyr', 'декабря', 'грудень', 'decembro', 'dezember',
'décembre',
)
);
$search = array(); $replace = array();
foreach ($translate as $english => $foreign) {
$search[] = '/(?:^|\s)(' . join('|', $foreign) . ')(?:\s|$)/';
$replace[] = $english;
}
$date = preg_replace($search, $replace, $date);
$epoch = 0;
$day = null;
$year = null;
$month = null;
if (preg_match('#^(\d{1,2})/(\d{1,2})/(\d{1,4})#',$date,$m)) {
# XXX: Might be better to offer back ambiguous dates for clarification?
if ($country == 'US') {
$day = $m[2]; $month = $m[1];
} else {
$day = $m[1]; $month = $m[2];
}
$year = $m[3];
if ($year<100)
$year += 2000;
} elseif (preg_match('#(\d{4})/(\d{1,2})/(\d{1,2})#',$date,$m)) {
$year = $m[1]; $day = $m[3]; $month = $m[2];
} elseif (preg_match('#(\d+)/(\d+)#',$date,$m)) {
if ($country == 'US') {
$day = $m[2]; $month = $m[1];
} else {
$day = $m[1]; $month = $m[2];
}
$year = date('Y');
} elseif (preg_match('#^([0123][0-9])([01][0-9])([0-9][0-9])$#',$date,$m)) {
$day = $m[1]; $month = $m[2]; $year = $m[3];
} else {
$dayofweek = date('w'); # 0 Sunday, 6 Saturday
if (preg_match('#next\s+(sun|sunday|mon|monday|tue|tues|tuesday|wed|wednes|wednesday|thu|thur|thurs|thursday|fri|friday|sat|saturday)\b#i',$date,$m)) {
$date = preg_replace('#next#i','this',$date);
if ($dayofweek == 5) {
$now = strtotime('3 days', $now);
} elseif ($dayofweek == 4) {
$now = strtotime('4 days', $now);
} else {
$now = strtotime('5 days', $now);
}
}
$t = strtotime($date,$now);
if ($t != -1) {
$day = date('d',$t); $month = date('m',$t); $year = date('Y',$t); $epoch = $t;
} else {
$error = 1;
}
}
if (!$epoch && $day && $month && $year) {
$t = mktime(0,0,0,$month,$day,$year);
$day = date('d',$t); $month = date('m',$t); $year = date('Y',$t); $epoch = $t;
}
if ($epoch == 0)
return null;
return array('iso'=>"$year-$month-$day", 'epoch'=>$epoch, 'day'=>$day, 'month'=>$month, 'year'=>$year, 'error'=>$error);
}
